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<?php |
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namespace FigTree\Config; |
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use FigTree\Exceptions\{ |
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InvalidPathException, |
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InvalidDirectoryException, |
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UnreadablePathException, |
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}; |
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use FigTree\Config\Contracts\{ |
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ConfigRepositoryInterface, |
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ConfigFactoryInterface, |
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ConfigInterface, |
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}; |
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use FigTree\Config\Exceptions\InvalidConfigFilePathException; |
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abstract class AbstractConfigRepository implements ConfigRepositoryInterface |
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{ |
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protected ConfigFactoryInterface $factory; |
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/** |
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* Config file directories. |
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* |
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* @var array |
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*/ |
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protected $directories = []; |
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/** |
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* Cached Config objects. |
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* |
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* @var array |
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*/ |
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protected $configs = []; |
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/** |
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* Get the directories to search for a Config file. |
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* |
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* @return array |
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*/ |
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public function getDirectories(): array |
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{ |
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return $this->directories; |
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} |
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/** |
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* Add a directory to search for a Config file. |
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* |
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* @param string $directory |
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* |
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* @return $this |
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*/ |
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public function addDirectory(string $directory): ConfigRepositoryInterface |
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{ |
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$dir = $this->resolveDirectory($directory); |
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$this->directories[] = $dir; |
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return $this; |
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} |
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/** |
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* Search for a Config file from the list of applicable directories. |
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* Returns null if it could not be found. |
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* |
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* @param string $fileName |
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* |
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* @return \FigTree\Config\Contracts\ConfigInterface|null |
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*/ |
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public function get(string $fileName): ?ConfigInterface |
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{ |
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if (key_exists($fileName, $this->configs)) { |
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return $this->configs[$fileName]; |
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} |
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$paths = $this->search($fileName); |
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if (empty($paths)) { |
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return null; |
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} |
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return $this->configs[$fileName] = $this->factory->create($paths); |
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} |
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/** |
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* Find all instances of the given file within configured directories. |
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* |
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* @param string $fileName |
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* |
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* @return array |
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*/ |
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protected function search(string $fileName): array |
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{ |
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$paths = []; |
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foreach ($this->directories as $directory) { |
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$fullPath = $this->resolveFile($directory, $fileName . '.php'); |
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if (!empty($fullPath)) { |
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$paths[] = $fullPath; |
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} |
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} |
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return $paths; |
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} |
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/** |
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* Resolve a given directory to an absolute path. |
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* |
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* @param string $directory |
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* |
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* @return string |
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* |
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* @throws \FigTree\Exceptions\InvalidDirectoryException |
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* @throws \FigTree\Exceptions\InvalidPathException |
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* @throws \FigTree\Exceptions\UnreadablePathException |
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*/ |
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protected function resolveDirectory(string $directory): string |
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{ |
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$dir = realpath($directory); |
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if (empty($dir)) { |
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throw new InvalidPathException($directory); |
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} |
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if (!is_dir($dir)) { |
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throw new InvalidDirectoryException($directory); |
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} |
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if (!is_readable($dir)) { |
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throw new UnreadablePathException(sprintf('Directory %s is not readable.', $dir)); |
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} |
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return $dir; |
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} |
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/** |
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* Resolve a file in a given directory to an absolute path, |
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* additionally ensuring the file exists within that directory. |
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* |
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* @param string $directory |
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* @param string $file |
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* |
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* @return string|null |
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* |
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* @throws \FigTree\Config\Exceptions\InvalidConfigFilePathException |
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*/ |
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protected function resolveFile(string $directory, string $file): ?string |
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{ |
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$prefix = $directory . DIRECTORY_SEPARATOR; |
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$path = realpath($prefix . $file); |
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if (empty($path) || !is_file($path) || !is_readable($path)) { |
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return null; |
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} |
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if (!str_starts_with($path, $prefix)) { |
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throw new InvalidConfigFilePathException($file); |
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} |
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return $path; |
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} |
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} |
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